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Starting Hazelcast IMDG cluster

  • Download Hazelcast IMDG 3.4.6 from here.
  • Go to Hazelcast Dir/bin.
  • To use the Custom UI one must start Hazelcast with JMX enabled.
    • Open server.sh and replace $RUN_JAVA -server $JAVA_OPTS com.hazelcast.core.server.StartServer with $RUN_JAVA -server $JAVA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=1010 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dhazelcast.jmx=true com.hazelcast.core.server.StartServer.
  • Open hazelcast.xml and disable multicast enabled. i.e. replace <multicast enabled="true"> with <multicast enabled="false">.
  • In above file enable tcp-ip and add the IP/hostnames of hazelcast cluster members -
    • set <tcp-ip enabled="true">
    • add cluster members - <member>Node IP</member>
  • Open Terminal, navigate to Hazelcast Dir/bin and start cluster by running command sudo -bE bin/server.sh.

Starting Inbuilt Hazelcast cluster

  • Checkout hazelcast-cluster code from here.
  • Go to resources folder cd hazelcast-cluster/src/main/resources
  • Add IPs of the nodes on which hazelcast instance need to be run. This will be added against key cache.server in hazelcast-server.properties file. In case of multiple nodes the value will be "," separated. E.g: Node-1 ip:5701,Node-2 IP:5701. For testing purpose one can use localhost.
  • Add IPs of the nodes on which hazelcast instance need to be run in file hazelcast.xml as well.In case of multiple nodes add a new member tag per IP. For testing purpose one can use localhost.
  • By default the logs of hazelcast will be created al location : /mnt/hazelcast_logs/. One can update it in file hazelcast-server-log4j.properties.
  • Got to base folder of hazelcast cluster : cd hazelcast-cluster
  • Build the code using: mvn clean install
  • In target folder zipped package will get created with name hazelcast-cluster-startup-1.0.0-pkg.tar.gz.
  • Extract the tar using command tar -xvzf hazelcast-cluster-startup-1.0.0-pkg.tar.gz to the wished location.
  • Once the tar is extracted it will create the dir hazelcast-cluster-startup-1.0.0. This dir will have conf,bin,lib folders and hazelcast-cluster-startup-1.0.0.jar.
  • Add the <path to conf>/hazelcast-cluster-startup-1.0.0/conf/* into the CLASSPATH.
  • Spawn hazelcast instance using command: sudo -bE <path to jar>/hazelcast-cluster-startup-1.0.0/bin/start-hazelcast.sh <Java Xmx> <Java MaxHeapFreeRatio> <Java MinHeapFreeRatio>.

NOTE: Copy the extracted hazelcast-cluster-startup-1.0.0 to all the nodes of Hazelcast cluster and execute #11-12 on each node of hazelcast cluster.